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Finding the Fourth Proportional to 57,637.58, 86,495.22 and 20,197.99

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Solution

The fourth proportional to 57,637.58, 86,495.22 and 20,197.99 is: 30,310.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,637.58 : 86,495.22 = 20,197.99 : x
  2. Step 2: Convert to fraction form
    57,637.58/86,495.22 = 20,197.99/x
  3. Step 3: Cross multiply
    57,637.58x = 86,495.22 × 20,197.99
  4. Step 4: Simplify right side
    57,637.58x = 1,747,029,588.61
  5. Step 5: Solve for x
    x = 1,747,029,588.61/57,637.58
  6. Step 6: Final answer
    x = 30,310.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.